Collection: Heterocyclic Building Blocks
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23069-71-8 | 6-Chloro-3,7,8-trimethyl-[1,2,4]triazolo[4,3-b]pyridazine
![CAS RN 23069-71-8 | 6-Chloro-3,7,8-trimethyl-[1,2,4]triazolo[4,3-b]pyridazine](//hoffmanchemicals.com/cdn/shop/files/Image_23069-71-8_a4d0c9bd-ba41-423e-af3f-dfc8a4a7bf50.jpg?v=1772088094&width=2400)
23069-71-8 | 6-Chloro-3,7,8-trimethyl-[1,2,4]triazolo[4,3-b]pyridazine
- Regular price
- $1,395.00 - $3,488.00
- Sale price
- $1,395.00 - $3,488.00
- Regular price
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67458-38-2 | 6-Chloro-3-Methyl-[1,2,4]triazolo[3,4-a]phthalazine
![CAS RN 67458-38-2 | 6-Chloro-3-Methyl-[1,2,4]triazolo[3,4-a]phthalazine | MFCD00593954](//hoffmanchemicals.com/cdn/shop/files/Image_67458-38-2_1e50b7e2-6413-44ea-a084-d8ba5a13deec.jpg?v=1772088093&width=2400)
67458-38-2 | 6-Chloro-3-Methyl-[1,2,4]triazolo[3,4-a]phthalazine
- Regular price
- $1,495.00 - $3,737.00
- Sale price
- $1,495.00 - $3,737.00
- Regular price
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1527471-06-2 | 6-Chloro-3-cyclopropyl[1,2,4]triazolo[3,4-a]phthalazine
![CAS RN 1527471-06-2 | 6-Chloro-3-cyclopropyl[1,2,4]triazolo[3,4-a]phthalazine](//hoffmanchemicals.com/cdn/shop/files/Image_1527471-06-2_a0870fa2-02f0-4d4d-8fe0-71af651fcd52.jpg?v=1772088091&width=2400)
1527471-06-2 | 6-Chloro-3-cyclopropyl[1,2,4]triazolo[3,4-a]phthalazine
- Regular price
- $1,295.00 - $3,238.00
- Sale price
- $1,295.00 - $3,238.00
- Regular price
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1453315-60-0 | 2-[(tert-Butoxy)carbonyl]-6,6-dioxo-6_-thia-2-azaspiro[3.4]octane-8-carboxylic acid
![CAS RN 1453315-60-0 | 2-[(tert-Butoxy)carbonyl]-6,6-dioxo-6_-thia-2-azaspiro[3.4]octane-8-carboxylic acid | MFCD27664843](//hoffmanchemicals.com/cdn/shop/files/Image_1453315-60-0_f3102d28-edd4-4c5e-a008-703d6bb8c07c.jpg?v=1772088068&width=2400)
1453315-60-0 | 2-[(tert-Butoxy)carbonyl]-6,6-dioxo-6_-thia-2-azaspiro[3.4]octane-8-carboxylic acid
- Regular price
- $2,997.00 - $3,896.00
- Sale price
- $2,997.00 - $3,896.00
- Regular price
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1453315-58-6 | 2-tert-Butyl 8-ethyl 6-thia-2-azaspiro[3.4]octane-2,8-dicarboxylate 6,6-dioxide
![CAS RN 1453315-58-6 | 2-tert-Butyl 8-ethyl 6-thia-2-azaspiro[3.4]octane-2,8-dicarboxylate 6,6-dioxide | MFCD27664830](//hoffmanchemicals.com/cdn/shop/files/Image_1453315-58-6_ec804d4e-6cc5-43ec-938d-9916f69c95e2.jpg?v=1772088066&width=2400)
1453315-58-6 | 2-tert-Butyl 8-ethyl 6-thia-2-azaspiro[3.4]octane-2,8-dicarboxylate 6,6-dioxide
- Regular price
- $2,897.00 - $3,766.00
- Sale price
- $2,897.00 - $3,766.00
- Regular price
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1453316-13-6 | 2-tert-Butyl 8-ethyl 6-thia-2-azaspiro[3.4]octane-2,8-dicarboxylate
![CAS RN 1453316-13-6 | 2-tert-Butyl 8-ethyl 6-thia-2-azaspiro[3.4]octane-2,8-dicarboxylate | MFCD27996134](//hoffmanchemicals.com/cdn/shop/files/Image_1453316-13-6_6cc55dec-540e-4cfc-a303-1ffcb44f4e88.jpg?v=1772088063&width=2400)
1453316-13-6 | 2-tert-Butyl 8-ethyl 6-thia-2-azaspiro[3.4]octane-2,8-dicarboxylate
- Regular price
- $2,397.00 - $3,116.00
- Sale price
- $2,397.00 - $3,116.00
- Regular price
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2925116-31-8 | (E)-1-Pyrimidin-5-yl-N-[4-(1,3-thiazol-5-yl)phenyl]ethanimine
![CAS RN 2925116-31-8 | (E)-1-Pyrimidin-5-yl-N-[4-(1,3-thiazol-5-yl)phenyl]ethanimine](//hoffmanchemicals.com/cdn/shop/files/Image_2925116-31-8_67ce13f0-f718-4376-95ec-46fdd6c035f2.jpg?v=1772088056&width=2400)
2925116-31-8 | (E)-1-Pyrimidin-5-yl-N-[4-(1,3-thiazol-5-yl)phenyl]ethanimine
- Regular price
- $1,997.00 - $2,596.00
- Sale price
- $1,997.00 - $2,596.00
- Regular price
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332113-79-8 | 4-(Thiazol-5-yl)aniline
332113-79-8 | 4-(Thiazol-5-yl)aniline
- Regular price
- $1,397.00 - $2,794.00
- Sale price
- $1,397.00 - $2,794.00
- Regular price
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![CAS RN 23069-71-8 | 6-Chloro-3,7,8-trimethyl-[1,2,4]triazolo[4,3-b]pyridazine](http://hoffmanchemicals.com/cdn/shop/files/Image_23069-71-8_a4d0c9bd-ba41-423e-af3f-dfc8a4a7bf50.jpg?v=1772088094&width=2400)
![CAS RN 67458-38-2 | 6-Chloro-3-Methyl-[1,2,4]triazolo[3,4-a]phthalazine | MFCD00593954](http://hoffmanchemicals.com/cdn/shop/files/Image_67458-38-2_1e50b7e2-6413-44ea-a084-d8ba5a13deec.jpg?v=1772088093&width=2400)
![CAS RN 1527471-06-2 | 6-Chloro-3-cyclopropyl[1,2,4]triazolo[3,4-a]phthalazine](http://hoffmanchemicals.com/cdn/shop/files/Image_1527471-06-2_a0870fa2-02f0-4d4d-8fe0-71af651fcd52.jpg?v=1772088091&width=2400)
![CAS RN 1453315-60-0 | 2-[(tert-Butoxy)carbonyl]-6,6-dioxo-6_-thia-2-azaspiro[3.4]octane-8-carboxylic acid | MFCD27664843](http://hoffmanchemicals.com/cdn/shop/files/Image_1453315-60-0_f3102d28-edd4-4c5e-a008-703d6bb8c07c.jpg?v=1772088068&width=2400)
![CAS RN 1453315-58-6 | 2-tert-Butyl 8-ethyl 6-thia-2-azaspiro[3.4]octane-2,8-dicarboxylate 6,6-dioxide | MFCD27664830](http://hoffmanchemicals.com/cdn/shop/files/Image_1453315-58-6_ec804d4e-6cc5-43ec-938d-9916f69c95e2.jpg?v=1772088066&width=2400)
![CAS RN 1453316-13-6 | 2-tert-Butyl 8-ethyl 6-thia-2-azaspiro[3.4]octane-2,8-dicarboxylate | MFCD27996134](http://hoffmanchemicals.com/cdn/shop/files/Image_1453316-13-6_6cc55dec-540e-4cfc-a303-1ffcb44f4e88.jpg?v=1772088063&width=2400)
![CAS RN 2925116-31-8 | (E)-1-Pyrimidin-5-yl-N-[4-(1,3-thiazol-5-yl)phenyl]ethanimine](http://hoffmanchemicals.com/cdn/shop/files/Image_2925116-31-8_67ce13f0-f718-4376-95ec-46fdd6c035f2.jpg?v=1772088056&width=2400)
